Great, I’m glad FABRIK is working!
With TwoBoneIK, what do you mean by “not rotate correctly”? Is the rotation facing the wrong angle, the pole node is not working, or something else? Also, does the issue occur in the example development project? While I didn’t notice any in my testing, it may be there is a bug.
For LookAt in 3D, right now I do not have any plans to add angle constraints, primarily because its really difficult to get constraints working in 3D. I do plan to eventually look at tackling 3D constraints, likely starting with the LookAt node, but right now its on the back burner. You can, however, use a CCDIK modifier in addition to the LookAt to constrain the rotation, I think.
2D LookAt has angle constraints, but its because rotation constraints are much easier in 2D since it doesn’t have that pesky third dimension and 3 axes of rotation 😆